baber/WOPTO huggingface dataset:
Patent GB-1298159-A (GB)
Title: Manufacture of phosphorus pentafluoride
Inventor: WIESBOECK ROBERT ALFRED
IPC: C01B25/10
Filed: 1970-03-10
Abstract: 1298159 Phosphorous pentafluoride USS ENGS & CONSULTANTS Inc 10 March 1970 11526/70 Heading C1A Phosphorous pentafluoride is produced by the reaction of phosphoryl fluoride with hydrogen fluoride. The PFs is vaporized and condensed and hexafluorophosphoric acid, formed by the reaction of water, phosphoryl fluoride and hydrogen fluoride is further treated by warming with a dehydrating agent to liberate a further quantity of phosphorous pentafluoride. The initial reaction of HF and POF 3  is preferably carried out by mixing the reagents in the cold, warming to room temperature, and heating in the range 60-80‹ C., or by pumping POF 3  into a reactor containing HF and carrying out the reaction in the range 10-100‹ C. It is preferred to use 2-4 moles of HF per mole of POF 3 . The removal of water from hexafluorophosphoric acid may be achieved by heating under pressure with SO 3 , pyrosulphuric acid or fluorosulphuric acid, preferably by cooling to - 196‹ C. before mixing and heating.
Patent GB-1453106-A (GB)
Title: Piezoelectric fuses
IPC: F42C11/02
Filed: 1974-03-14
Abstract: 1453106 Fuzes DYNAMIT NOBEL AG 14 March 1974 [15 March 1973] 11534/74 Heading F3A A piezoelectric fuze for shells or grenades comprises a detonator, a threshold switch, a source of electric current for firing the detonator, a piezoelement for producing an electrical output signal on impacting of the fuze on to a target, which signal at least aids in overcoming the threshold value of the threshold switch, and control means for controlling the ignition of the detonator, the control means providing an electrical output signal for overcoming the threshold value of the switch, the switch being responsive to the output signals of the piezoelement and the control means for establishing a connection between the source of electric current and the detonator for igniting the detonator, when the threshold value of the switch is overcome. The control means provides an output signal of gradually increasing value with at least the final value being sufficient to exceed the threshold value of the switch independently of the output signal of the piezoelement. The threshold value of the switch may be above the maximum output signal of the piezoelement. Further control means are operative to prevent switching through of electric current from the current source to the switch and, in the event of the switch being opened, to the detonator for a predetermined time interval after launching the shell. Additional control means may also be provided for preventing the supply of electric current from the current source to the detonator for a predetermined time after the threshold switch has been opened by the piezoelement whereby the shell may penetrate its target before exploding.
Patent GB-542508-A (GB)
Title: Improvements in or relating to optical objectives
IPC: G02B13/00
Filed: 1940-07-12
Abstract: 542,508. Lenses. TAYLOR, TAYLOR & HOBSON, Ltd., and WARMISHAM, A. July 12, 1940, No. 11603. [Class 97 (i)] In an objective comprising an asymmetrical divergent simple component behind two simple convergent components and in front of a third simple convergent component, the rear surface of the second component is convex towards the front and has a radius R, less than five times the equivalent focal length F of the objective, and the radius R. of the front surface of the divergent components is numerically greater than ten times F and is positive or negative. The radius R 4  is preferably greater than F, the radius R. of the divergent component is preferably less than one-tenth of R 5 , and the mean refractive index of the divergent component is preferably greater than 1.65. The glass of the third convergent component preferably has a mean refractive index greater than 1.62 and an AbbÚ V number less than 50. Data for two examples are set out. Specification 477,424 is referred to.
Patent GB-1499500-A (GB)
Title: Silencer for use in testing jet engines
IPC: F02C7/00
Filed: 1974-12-24
Abstract: 1499500 Silencing jet engines NYBY BRUK AB 21 Dec 1974 [7 May 1974] 11678/77 Divided out of 1482431 Heading F1B The subject matter of this Specification is the same as that of Parent Specification 1482431 but the claims are directed to the construction of the silencer.
Patent GB-454364-A (GB)
Title: Improvements in the manufacturing of electric resistances
IPC: H01C17/22
Filed: 1936-04-24
Abstract: 454,364. Resistance coatings and deposits ; wire resistances. ELEKTRISCHE GLUHLAMPENFABRIEKEN J. KREMENEZKY AKT.-GES., 57, Dresdnerstrasse, Vienna. April 24, 1936, No. 11696. Convention date, April 26, 1935. [Class 37] After completion of a resistance element, for example, a coating or wire resistor employed in wireless apparatus, the end portions are metallized while conducting plates connected to the element nd to a resis - tance meter give the ohm reading and limit the area metallized. The plates 6, 7 are adjustably spaced on a resistance coating 2 and one of them is also adjustable in the vertical direction, the terminal ends being sprayed with a conductor from guns 10, 11. In an arcuate resistor 15, one or more screens 20 may be located between the plates 16, 17 for preventing shoot-circuiting of the resistance element. Where the resistor occupies more than one plane a number of plates 6, 7 are provided to embrace the whole contour. The method may be employed automatically to convey and eject the resistances with the meter set to a desired reading, stoppage being effected by the current when a faulty element is tested.
Patent GB-254050-A (GB)
Title: Improvements in the manufacture of metal, more especially magnesium, from the corresponding metallic chloride
IPC: C25C3/04
Filed: 1925-05-07
Abstract: 254,050. Arnold, C., (Dow Chemical Co.). May 7, 1925. Electrolytic furnaces.-A furnace for depositing metals from fused chlorides comprises a cast iron or steel vessel 1, c'onstituting the cathode, and a bridge 2 supporting an annular partition 3 of porcelain, fireclay or other material, surrounding a carbon or graphite anode 4. Fresh materials are fed through the top of the partition 3, which is provided with removable segmental plates 5, and also with a duct for the removal of gas. In a modification, an independent cathode is inserted through the wall of the vessel and the partition is arranged diametrally.
Patent GB-1100372-A (GB)
Title: Aerating device
IPC: B05B7/04
Filed: 1965-03-19
Abstract: 1,100,372. Aerating water. ROKAL G.m.b.H. 19 March, 1965 [17 Aug. 1965], No. 11898/65. Heading B1C. An aerator for attachment to a faucet comprises a perforated partition 2 and screens 8, 9 linked by a sleeve 5 to form a unit which is suspended from a flange 6, leaving an annular air inlet space between the sleeve and the casing. If, as shown, the casing is internally screwed for attachment to the faucet, the unit may be suspended from an internal shoulder 7; if externally (see Fig. 2, not shown), from the top of the casing. The upper screen may be dished and is preferably finer than the lower.
Patent GB-782741-A (GB)
Title: Improvements in or relating to magnetron valves
IPC: H01J25/587
Filed: 1954-04-26
Abstract: 782,741. Magnetrons. TELEFUNKEN GES. April 26, 1954 [April 24, 1953], No. 11911 /54. Class 39(1). A magnetron has a number of resonant cavities, formed by inwardly projecting vanes, effectively divided by means of an energy coupling member into a plurality of mutually decoupled resonators ; the cavities of one resonator interlace with those of another. In Fig. 1 the cavities formed by vanes 1, 2, 3, 4 interlace with those formed by vanes 5, 6, 7, 8. Coupling to one set of cavities may be by a symmetrical loop, at vane 5, or by an unsymmetrical loop, at vane 3. One resonator may be unloaded with a high Q and serves for frequency stabilization or, control oscillations may be applied to one of the resonators. Different D.C. voltages may be applied to the various anode vanes to determine which, or whether both of the resonators are to be selfoscillating ; the vanes are insulated in respect of D.C. from the anode cylinder and have separate leads. Strapping may be provided for each resonator or set of cavities. Energy may be coupled in or out between straps. In Fig. 4 two sets of vanes 11, 13 and 17, 18 are oblique to the main axis in opposite directions, but their inner ends are in the same plane. Movable tuning rings 20, 21 are provided. Tuning of the loaded resonator with low Q may be unnecessary. To obtain a high Q for the unloaded resonator the surface conductivity may be increased by a polished silver coating. Magnetrons having more than two e.g. three mutually recoupled resonators may be used as heterodyne mixers or cascade amplifiers.
Patent GB-247901-A (GB)
IPC: F16H15/40
Filed: 1925-05-07
Abstract: 247,901. Lavaud, D. S. de. Feb. 23, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Variable-speed friction gearing comprises a ball e connecting a cylindrical driving member f to a driven disc a. The speed is varied by moving the member, f axially. The member f may be intermediate between the ball and disc pairs or the disc and ball and be intermediate between member f and a driven shaft in line therewith.
Patent GB-400860-A (GB)
Title: Improvements in sock-supporters
IPC: A41F11/16
Filed: 1933-04-24
Abstract: 400,860. Sock suspenders. FRISELL, E. H., 108, Valhallavagen, Stockholm. April 24, 1933, No. 11977. [Class 141.] A sock suspender comprises a leg-embracing strap one end of which is formed with a pair of links, one pair 4, 5 supporting a hose grip 2 and the other pair 6, 7 supporting a hose grip 3. Each link is formed with a long and a short member, the short members 4, 7 being of elastic material and the long members 5, 6, which cross each other, being of inelastic material. The links may be formed, Fig. 1, by longitudinally cutting up the ends of the legembracing strap, or, as shown in Fig. 3, the long member of one link and the short member of the other link consist of a single length of material passing through loops 11, 12 of the legembracing strap.
Patent GB-149735-A (GB)
Title: Improvements in mathematical drawing and angle measuring instruments
IPC: B43L7/00
Filed: 1919-05-14
Abstract: 149,735. Manzitti, C. May 14, 1919. Curve-describing instruments; ellipsographs; dividing-instruments; protractors.-The device comprises two rods or rules 1, 2, Figs. 1 and 2, hinged together at 4, one or both having a graduated straight or active edge passing through the axis 5 of the hinge 4, points 3, 6 being provided on the straight edge and on the other rod at equal distances from the axis 5. The point 5 indicating the axis of the hinge may be marked on a transparent member fitting into a cylindrical cavity formed in the hinge joint. In tracing an ellipse, the point 3 is fixed at the centre of the desired ellipse, the point 6 is moved along the major axis, and the point 5 describes a circle about the point 3 as a centre; a tracing-point 13 at any required position on the scale 1 traces the ellipse. A multiple instrument may be formed by hinging two rods 2 at one or both ends of the graduated scale 1; or the scale is provided with a central longitudinal graduated slot having one or two rods hinged to one or both ends. In employing the device for trisecting angles, or for triplicating angles to ensure greater accuracy in reading, the rod 1, Fig. 3, extends on both sides of the hinge point 5, and the point 3 is pivoted at the centre 7 of a protractor. The distances 7-5, 5-6, 5-9 are equal, and the points 6, 9 move along the lines 6-7, 9-7 respectively. Fine adjustments of the point 6 are effected by means of a screw 12. If 10 be the second intersection of the edge of the rod 1 with the circle described by the point 5, the magnitude of the angle 10, 7, 11 will be three times that of the angle 10, 6, 7.
Patent GB-1144858-A (GB)
Title: Improvements in or relating to decorating tools
Inventor: LEIGH MONTY
IPC: B05C17/02
Filed: 1967-03-15
Abstract: 1,144,858. Coating apparatus. LENGARMAC Ltd. 5 Jan., 1968 [15 March, 1967], No. 12,150/67. Heading B2L. A paint roller is covered by a tubular sleeve of stretchable fabric made from extruded synthetic filaments or fibres. The fabric is preferably knitted from crimped synthetic extruded filaments such as nylon, and has ribbed portions at each end to allow more stretching thereat. One end is closed either by sieving or by means of a drawstring, and the other end is constricted after the sleeve has 'been drawn on to the roller. It is stated that different finishes can be achieved by the use of different patterns of fabric.
Patent GB-656482-A (GB)
Title: Installation for calling in wireless communication transmitting and receiving stations
IPC: H04B1/034
Filed: 1948-05-04
Abstract: 656,482. Radio signalling; receiving circuits. AUTOPHON AKT.-GES. May 4, 1948, No. 12259. Convention date, May 30, 1947. Drawing to Specification. [Class 40 (v)] In a carrier telephony transmitting and receiving station comprising a noise-squelching circuit which blocks the output of a gain controlled amplifier during intervals between speech, when no carrier is transmitted, to suppress noise, replacement of the handset on its spring hook in preparation for any further call automatically opens a switch in the input circuit of the noise-squelching circuit to render it inoperative during calling pulses, and thereby increase the sensitivity of the receiver while being called. A second contact of the spring hook may at the same time disconnect the receiver audio amplifier from the handset or the station loud-speaker, but not from a remote call indicator, e.g. buzzer, during readiness for receiving a call. Frequency modulation may be used.
Patent GB-1138936-A (GB)
Title: Apparatus for the quick filling of tanks with fuels
IPC: B65D90/22
Filed: 1967-03-17
Abstract: 1,138,936. Filling tanks. EDELEANU G.m.b.H. 17 March, 1967 [28 May, 1966], No. 12273/68. Divided out of 1,138,935. Heading B8T. [Also in Divisions A4 and F2] A tank or tanker 2 is filled with liquid fuel through a pipe 1 slidable upon which is a jacket 3 surrounded by a ring-shaped exhaust duct 4 having inlet holes 5, a gas venting pipe 9 and radial support arms 6 which rest on the flange 7 of the tank &c. inlet. A flexible plastics skirt 8 on the jacket collects gas escaping from the tank inlet. A fan 10 draws off gas from the venting pipe 9. In use, risk of explosion when filling the tank is reduced by first introducing through the pipe 1 a quantity of liquid butane. Liquid fuel is then passed through the pipe 1, and the butane, by now gaseous, is driven out to pass through the holes 5 into the duct 4, the pipe 9 and the fan 10; it may then be liquefied again for re-use.
Patent GB-181565-A (GB)
Title: Improvements in or relating to variable speed hydraulic transmission devices
IPC: F16H61/46
Filed: 1921-04-29
Abstract: 181,565. Variable Speed Gear, Ltd., and Ingoldby, M. K. April 29, 1921. Clutches and speed-varying mechanism.-In variable-speed hydraulic transmission devices comprising a pump A and motor B, the position of the stroke-controlling member B<1> of the motor is controlled by a piston E<1> subject to the action of the pressure in the system and of a spring e<1>, the arrangement being such that as the pressure decreases, the stroke of the motor pistons decreases, and the speed of the motor therefore increases. Fixed and adjustable stops b, b<1> are provided, and the cylinder E is connected to the circuit through a cylinder e<2> having a throwover valve e<3> and through pipes e<4>, e<5>.
Patent GB-163985-A (GB)
Title: Improvements in indicating lever limit gauges
IPC: G01B3/44
Filed: 1921-05-02
Abstract: 163,985. Krupp Akt.-Ges., F. May 22, 1920, [Convention date]. Index hands and pointers.-Relates to gauges in which the indicating lever is provided with a tolerance field adjustable for different degrees of accuracy, and comprises the arrangement of the adjustable marks at the ends of two spring strips which are adapted to be wound on two drums and to be fixed in any desired position. The indicating lever B passes between two rails a<2>, a<3>, which are screwed to the front and back walls of the casing. The end of the lever is provided with two indicating lugs b<2>, b<3> at right-angles to the lever adapted to move over the cylindricall curved surfaces of the rails a<2>, a<3>. A scale a<4> is provided on the surface of the rail a<3> while the surface of the rail a<2> is uniformly coloured, for example, red. Two thin steel bands C, C<1> are adapted to slide on the surface of the rail a<2> and are wound on drums D, D' each of which is housed in the casing and can be rotated by a knurled wheel. Spring clips E, E<1> surrounding the coils on the drums may be operated by screws F, F<1> to clamp the bands after they are set so that their ends mark the limits to be worked to. In a modification, the scale is marked on the flat outer surface of the rail a<3> and the tolerance field is limited by markers mounted on the ends of the steel bands and extending to the scale divisions. In this case the end of the lever itself forms the reading pcint.
Patent GB-775158-A (GB)
Title: Improvements in or relating to high voltage variable resistors
Inventor: MUCHER GEORGE JOHN
IPC: H01C10/32
Filed: 1955-05-02
Abstract: 775,158. Variable resistances. CLAROSTAT MFG. CO., Inc. May 2, 1955, No. 12637/55. Class 37. In a variable potentiometer of the type in which a resistive strip is mounted on the inner periphery of an insulating case and a movable contact member moves along the inner surface of the strip by rotation of a central shaft, an insulated plate is attached to the shaft and has a pair of diametrically opposite openings in which are held flexible arms of an elongated contact strip of which the main body extends diametrically to the insulated casing so that the arms afford detachable coupling of the contact strip to the insulated plate. The strip also has extending therefrom a contact which movably engages the resistive strip as the shaft is rotated together with the insulating plate. Figs. 2 and 4 show a variable resistor in which a resistive strip 11 is mounted inside an insulated casing 5 in which a central shaft 22 is held in housing 6. The shaft 22 passes into a non-conductive plate 25 and into a further member 30 which secures the shaft to the plate 25 by means of extending arms 28 and notches 27. A metallic contact strip 32 has extending arms 33 which pass through key hole openings 40 in an insulating shield 39 and into notches 41 cut in insulating plate 25 so that the four members 25, 30, 39 and 32 are rigidly held together. The shields 25 and 39 serve additionally to prevent current leakages when the potentiometer is used with high voltages. Arms 28 of member 30 may be extended to provide a stop mechanism. Collector ring arms 34 are mounted on member 32 so as to bear against the collector ring 18 which is mounted on cover plate 14 by means of terminal member 20 and extending arm 19. The contact strip 32 also has a resilient contact arm 35 of length such as to bear against resistive strip 11. The ends of the resistive strip being brought out at terminals 13.
Patent GB-801406-A (GB)
Title: Electrolytic process for the manufacture of aliphatic dinitriles
IPC: C25B3/29
Filed: 1956-04-25
Abstract: 801,406. Electrolytic production of aliphatic dinitriles. GOODYEAR TIRE & RUBBER CO. April 25, 1956 [June 6, 1955], No. 12658/56. Class 41. Aliphatic α : #-dinitriles CN(CH 2 ) 2n CN, where n is an integer from 2 to 5, are prepared by electrolysis in cells having smooth anodes of or surfaced with platinum or iridium of a solution, preferably in water, methanol, or ethanol, of #-cyanoaliphatic acids CN(CH 2 ) n  and an alkali metal, ammonium, primary, secondary, or tertiary amine salt of the same acid, the dinitriles then being separated from the electrolysis product, as by distilling off the solvent, dissolving the remaining acid and salt in water, and separating the resultant solution from the insoluble dinitrile. Preferably the electrolysis is performed in a glass cell fitted with a reflux condenser at a temperature of 40 to 50  C. with a voltage drop which is increased from an initial 20 volts to maintain a current density of at least 10 amps./sq. dm. up to 200 amps./sq. dm., using non-reacting cathodes of carbon, graphite, platinum, copper, nickel, or steel, and agitating the electrolyte as by means of rotating anodes and a pump in addition to the agitation produced by evolution of hydrogen and carbon dioxide at the electrodes. Specification 677,516, [Group IV (a)], is referred to.
Patent GB-1457669-A (GB)
Title: Brewers copper in particular for wort or mash
IPC: B01D1/12
Filed: 1974-03-21
Abstract: 1457669 Brewer's copper BTE BRAUEREI TECHNIK ESSEN GmbH 21 March 1974 [21 March 1973] 12756/74 Heading C6E [Also in Divisions B1 and F4] A brewer's copper 1 comprises a cup 4 or channel 5 extending downwardly from the lowest floor level, which contains a heater 3 spaced from both a wall and a floor thereof. A fixed deflector 8 may be incorporated at a distance from the heater and a wall of the cup or channel. The heater may be arranged centrally in the cup or channel or may be attached to a wall thereof and may have its upper end either above or below the highest level of the cup or channel. A circular copper Fig. 2 comprises a hollow cylinder 8 as deflector, said cylinder overlapping the upper end of the heater. The cylinder may have guide ribs on its inside wall and a stirring device with agitators 12, arranged in the cylinder and beneath the heater, may be provided. A rectilinear copper Fig. 4 has a copper wall which is coplanar with a wall of the housing 10, 6 which is formed as a channel, the heater being attached to said wall, and the deflector comprises an angled guide-plate 8. At least one agitator 12 may be employed.
Patent GB-1042924-A (GB)
Title: Fluid valve device for reducing the pressure and temperature of a gaseous or vaporised working medium
IPC: F16K47/04
Filed: 1963-04-01
Abstract: 1,042,924. Valves. C. H. ZIKESCH. April 1, 1963, No. 12767/63. Heading F2V. In a vapour cooling device, a coolant atomizer is operated by a partial flow of the vapour through by-pass passages having inlets situated between a shutoff and a throttle cone part of a closure member controlling the main flow of vapour so that both the main and by-pass flow are simultaneously obturated. A valve closure member 2 (Fig. 2), a pressure reducing throttle cone 1 and atomizer nozzle 10 are carried upon hollow spindle 3. Upon opening the valve a partial flow of vapour from constriction 5 through by-pass passages 4 into an annular chamber 9 passes through the atomizer nozzle 10 at high velocity carrying with it cooling water drawn through spindle bore 8. In a further embodiment (Fig. 3, not shown), high pressure reduction is obtained in stages by dividing the cone into a number of stages d, e, f, g by throttle discs 11. Upon lifting the seat 2 a partial flow of steam is taken from the highest pressure compartment d passing through the bore 13 to atomizer 12 supplied with water through the opposite bore 14.